It almost looks like some big plate for Vgpu/Vmem adjustment. So, instead of having to use the ones provided by the MFC, you 'plug in' this thing on vga or mainboard and can adjust udjust it using software on a notebook?

This is nothing about voltage modification
This is a tool for ...
It's not directly for overclocking, but in general this is essential and very useful for overclockers and entusiasts.

I had some ideas about making voltmodding device, exact what massman suppose, but then after quick local market study decided to drop that idea, coz price of device will be near or above EVbot, and affordable only by few overclockers here. So quite dead thing from start on local market.

It's not a PSU yet it accepts and delivers lots of power, so maybe a conditioning and stepping device of some kind. That's why I thought it might power the CPU earlier. What voltage ranges does it operate in?